SURFACE TILLAGE TOOL Russian patent published in 2004 - IPC

FIELD: agricultural engineering. SUBSTANCE: tillage tool has frame and working members mounted on frame. Each working member is made in the form of two vertical tines connected by horizontal knife, whose blade is positioned at an angle to direction of advancement of working tool. Ends of knife 4 adjoining to tines are continuously bent. Imaginary straight line passing through center of cylinder defining bent portion of knife is extending in parallel with direction of movement. Angle defined by rear bent edge of knife or tine and direction of advancement of tillage tool is 90 deg. Knife is subjected to thermochemical strengthening procedure, such as oxycarbonitration, for increasing wear resistance. EFFECT: improved quality of soil tillage and increased tillage tool operating time. 3 dwg